Well-drilling device



Nov. 1924.

H. B. LEFLER WELL DRILLING DEVICE Filed July 10. 1923 2 Sheets-Sheet 1 Nov. 4 192:4. 1,514.54?

H. B. LEFLER WELL DRILLING DEVICE Filed July 10. 1925 2 sneets sheet 3 Patented Nov. 4, 1924.

n'AwLnv B. Lamas, Gi GRAND Baron, Louisiana, resin-nee or en's-amt To 13E manor; nussisnt, or snanp Baron, Louisiana.

WELL-DRILLING nnvrcn.

Application filed July 10,

To all whom it may concern:

Be it known that HAwLEY B. LnrLnn, a citizen of. the United States 01"? America, residing at Grand Bayou, in the parish of Red River and State of Louisiana, has invented new and useful Improvements in Well-Drilling Devices, of which the following is a specification.

The object of the invention is to provide in connection with well drilling apparatus a simple and eliicient means whereby the drill or pump rod lift-ing or drawing means may readily be attached or engaged with the puller rod when the tools or rod are to be drawn and whereby the parts of the mechanism may be readjusted for the purpose of resuming the pumping or drilling operation with out loss of time or special efiort on the part of the operator or attendants; and more particularly to provide means for the purpose indicated which will involve the minimum amount of modification of the drill mechanism as now generally employed; and with these objects in view the invention consists in a construction and combination of parts of which a preferred embodiment is shown in the accompanying drawings, wherein Figure 1 is a view of a drilling apparatus of the conventional type having a rod or tool drawing means embodying the invention arranged in operative relation therewith.

Figure 2 is a detail view of the upper end of the puller rod and the means for operating therewith for effecting the desired object.

Figures 3 and 4- are detail sectional views of the clamp for engagement with the well tubing, the latter being taken on the plane indicated bv the line 4-4 of Figure 3. Figure 5 is a detail perspective View of the slip block.

The illustrated apparatus in connection with which the device embodying the invention is shown includes drilling or pumping mechanism having the samson post 10, walking beam 11, draw bar 12 for connection with the cross head 18 of the puller rod 14, a derrick 15, and a hoisting mechanism consisting of the cable 16 traversing a pulley 17 and actuable by a drum 18 and provided with a hook 19.

Fitted to the end of the puller rod 14 is an extension 20, engaged therewith by means of the usual thread at the upper end of the rod and carrying in addition to the cross head 1923. Serial No. 650,683.

13 for engagement by the draw bar, a swiveled eye 21 suitable for engagement by the hoisting hook 19 asindicated in Figure 1 This puller rod extension carries lateral guide eyes 22 and through which extend guide rods 23 carried by a clamp 24 for engagement with the tubing indicated at 25 and provided in the construction illustrated with a slip block 26 fitted in a lateral seat 27 between the jaws 28 of the flap and engaged by transverse diagonally disposed pins 29 which extend through the clamp. The openings 30 in the slip block are preferably diagonally disposed as indicated so that any tendency of said block to move. downwardly with relation to the body of the clamp will increase the frictional engagement thereoi with the tubing.

The guide rods 23 are provided at their upper extremities with stops 31 serving to limit the upward movement of the guides 22 with relation thereto, so that with the draw bar 12 disengaged from the puller rod and the hook 19 of the hoisting mechanism engaged with the eye 21, the puller rod extension may be elevated until it comes into contact with said stops, whereupon the elevating strain will be applied through the guide rods through the clamp and hence to the tubing to draw'the latter.

Obviously to restore the mechanism to the operating condition it is only necessary to reengage the pumping or drilling mechanism with the puller rod and disengage the hoisting mechanism from the eye at the upper end Of the puller rod extension, as the guide rods are of a length sufiicient to permit of a full 2. A device for the purpose indicatedhaving a clamp carryingparallel guide rods, a puller rod extension attachable to a puller rod and provided with guide eyes mounted 7 upon said guide rods, and a hoisting eye car- A device for the purpose indicated havried by said puller rod extension and adapted for engagement by a hoisting hook.

3. A device for the purpose indicated having a clamp carrying parallel guide rods, a puller rod extension attachable to a puller rod and provided With guide eyes mounted upon said guide rods, and a hoisting eye carried by said puller rod extension and adapted for engagement by a hoisting hook, said pu1 ler rod extension also being provided with a cross head for engagement by the draw bar of a pumping mechanism.

ing a clamp carrying parallel guide rods, a puller rod extension attachable to a puller rod and provided with guide eyes mounted upon said guide rods, and a hoisting eye carried by said puller rod extension and adapted for engagement by a hoisting hook, said guide rod being provided with terminal stops.

In testimony whereof he affixes his signature.

HAWLEY B. LEFLER. 

